Straightedge machine



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` XNVENTOR A'rroRNEY- WITNESS:

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INVENTOR ATTORNEY WITNESS:

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H. F. VVOERTH STHAIGHTEDGE MACHINE Filed Oct. 6, 1922 4 Sheets-Sheet 4 #awry Wam/Wa.

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Patented Aug. 12, 1924.

HENRY F. WOERT-I, OF CO'LUIVIBUS, NEBRASKA.

STRAEGHTEDGE MACH'INE.

To all whom t may concern.'

Be it known that HENRY F. lVonR'rr-I, a citizen of the United States, residing at Columbus, in the county of Platte and State of Nebraska, have invented new and useful Improvements in Straightedge Machines, of which the following is a specification.

This invention relates to a straight edge machine, the general object of the invention being to provide means whereby the machine can be rotated on its base and to make the holders at the ends vertically adjustable by means of screw-shafts.

Another object of the invention is to make the entire device of but few parts and these of simple character so that the device can be manufactured to sell at low cost.

The invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing my invention in detail, refe'rence will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a plan view of the complete machine.

Figure 2 is a side view thereof.

Figure 3 is an end view thereof.

Figure l is a sectional view on line lf-4L of Figure 2.

Figure 5 is a sectional view on line 5-5 of Figure 2.

Figure 6 is a horizontal sectional view on the line 6-6 of Figure 2.

Figure 7 is a side view showing the position on the straight edge.

Figure 8 is a perspective view of one of the Z shape plates.

Figure 9 is a detail of the device.

In these views, 1 indicates the bottom plate, which is provided wtih threaded holes 2 for receiving adjustable supports, not

shown. A suporting plate 3 is rotatably connected with the bottom plate by the bolt .1f which engages the centers of the two plates. The supporting plate is provided with a flange 5 which overlaps the bottom plate, as shown. Dia-metrically arranged handles 6 are secured to the revolving plate for rotating the same. A casing 7 is secured to the supporting plate, the sides of the casing being flanged, with the bottom flanges bolted to the supporting plate and the upper flanges bolted to the top of the casing. rlhe ends of the top project, as shown.- A Z- shape plate, or a plate provided with l.- shaped ears at its ends at one side, is bolted, or riveted, to the supporting plate, at each end of the casing. The main part of each plate 8 is located outside the periphery of the supporting plate and is in the same plane as the projecting end of the top of the casing. A pair of rods is arranged at each end of the casing, the ends of the rods being secured in thefprojecting ends of the top and in the plates 8. These ends may be threaded and secured in threaded holes in the parts or they may be held in place by nuts. A frame 9 is slidably supported on each pair of rods and the frames are adjusted on the rods by means of the threaded shafts 10 which engage threaded holes in the ends of the top of the casing. Each frame is formed of the two vertical pieces 11, which are spaced apart the distance of the straight edge 12, and the two cross pieces 13, at the ends of the pieces 11 and which are connected to said pieces by the angle brackets 14:. A top plate 15 is secured to the top of each frame and each plate has an offset center for receiving the end of the screw shaft, which is connected thereto by the nuts 16. Holes are formed in the cross pieces, the brackets and the top plates through which the rods pass so that the frame is guided in its up and down movement by said rods. As shown the pieces 11 engage the sides of the straight edge and the cross pieces the top and bottom thereof and the gears of tie plates 8 are spaced apart a distance to receive the lower part of the straight edge. Handles 17 are provided for the screw shafts. Holes 18 are formed in the sides of the casing for the level suport.

From the above it will be seen that the device can be adjusted in a circular manner and the straight edge can be adjusted vertically by means of the frames sliding on the rods at the ends of the casing.

By turning up the nut 16 at one end of the device the parts can be raised at said end. This is necessary when leveling olf cement floors and the like where the operator wishes to go over the surface several times and not drag any surplus cementback with the straight edge. The other edge will remain as shown as a slight play on the parts is permitted by making the holes slightly large.

It is thought from the foregoing descripytion that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall Within the scope of the appended claims.

Having thus described my invention what I claim is :-k

l. A straight edge machine comprising a base, a supporting plate rotatably mounted thereon, a casing carried by the supporting plate, rods at the ends of the casing, a frame slidably mounted on each pair of rods and manually operated means for adjusting the frames vertically.

2. A stra-ight edge machine comprising a base, a supporting plate rotatably mounted thereon, a casing carried by the plate, a plate at each end of the casing and secured to the supporting plate and projecting beyond the periphery thereof, a pair of rods at each end of the casing, said rods being carried by the last mentioned plates and by the top of the casing, a frame slidably mounted on each pair of rods and screw shafts connected with the frames and passing through threaded holes in the top of the casing.

In testimony whereof I aHiX my signature.

HENRY F. IVOERTH. 

